Pending approvals: allow for adding reasons to rejections
It would be great to be able to enter a reason when approving or rejecting a proposed edit. There would be two benefits: other reviewers would read it and agree or disagree, and the editor would learn the rules of editing.
For instance: Sometimes I reject edits when someone corrects another ones answer (not only in grammar or formatting, but in the statement). He may be right, but he should put it into a comment or write his own answer. I would reject it and write "Please write this into a comment rather then changing the answer".
I saw such edits being approved. If there would be comments, even the reviewers would learn from each other and the reviews would become more consistent. (If others don't agree with my judgment in the above case, I will stop rejecting such edits. etc.)